Organic matter and soil aggregation after the conversion of “murundu fields” into a no-tillage system

Authors

  • Edicarlos Damacena Souza Universidade Federal de Mato Grosso, Campus Universitário de Rondonópolis, Rodovia MT-270, Km 06, CEP 78735-910 Rondonópolis, MT.
  • Marco Aurélio Carbone Carneiro Universidade Federal de Lavras, Departamento de Ciência do Solo, Caixa Postal 3037, CEP 37200-000 Lavras, MG.
  • Helder barbosa Paulino Universidade Federal de Goiás, Departamento de Agricultura, Regional Jataí, BR 364, Km 192, Zona Rural, CEP 75800-000 Jataí, GO.
  • Diego Oliveira Ribeiro Centro Universitário de Mineiros, Departamento de Agronomia, Rua 22, Setor Aeroporto, CEP 75830-000 Mineiros, GO.
  • Cimélio Bayer Universidade Federal do Rio Grande do Sul, Departamento de Solos, Avenida Bento Gonçalves, no 7712, CEP 91540-000 Porto Alegre, RS.
  • Leonardo Ricardo Rotta Universidade Federal do Rio Grande do Sul, Departamento de Solos, Avenida Bento Gonçalves, no 7712, CEP 91540-000 Porto Alegre, RS.

DOI:

https://doi.org/10.1590/S1678-3921.pab2016.v51.22502

Keywords:

Cerrado, crop chronosequence, aggregate stability, soil carbon stock, labile fraction, carbon management index.

Abstract

The objective of this work was to evaluate the effect of the conversion of “murundu” (little natural mounds) field areas into no-tillage agricultural systems on the stocks of soil organic C and total N, on their fractions in soil organic matter, and on aggregate stability. The study was carried out in a chronosequence of 7, 11, and 16 years of conversion into a no-tillage system, and in two reference areas characterized as top mounds (TM) and between mounds (BM). Soil C content varied according to the time of conversion into agricultural areas at all soil depths, except in the BM area. Organic C stocks showed negative effects of the conversion of native area into an agricultural system, and the largest stocks were observed in the BM and TM areas. The
carbon management index increased over time after no-tillage adoption, in relation to TM, and soil properties improved with the increase in PD adoption time from 7 to 16 years, but organic C stocks in the converted areas did not return to the levels observed in the reference areas.

Author Biographies

Edicarlos Damacena Souza, Universidade Federal de Mato Grosso, Campus Universitário de Rondonópolis, Rodovia MT-270, Km 06, CEP 78735-910 Rondonópolis, MT.

lattes.cnpq.br/6843055362772781

Marco Aurélio Carbone Carneiro, Universidade Federal de Lavras, Departamento de Ciência do Solo, Caixa Postal 3037, CEP 37200-000 Lavras, MG.

lattes.cnpq.br/4868736525994145

Helder barbosa Paulino, Universidade Federal de Goiás, Departamento de Agricultura, Regional Jataí, BR 364, Km 192, Zona Rural, CEP 75800-000 Jataí, GO.

lattes.cnpq.br/9256553191725622

Diego Oliveira Ribeiro, Centro Universitário de Mineiros, Departamento de Agronomia, Rua 22, Setor Aeroporto, CEP 75830-000 Mineiros, GO.

lattes.cnpq.br/9297495437100831

Cimélio Bayer, Universidade Federal do Rio Grande do Sul, Departamento de Solos, Avenida Bento Gonçalves, no 7712, CEP 91540-000 Porto Alegre, RS.

lattes.cnpq.br/5954461350700731

Leonardo Ricardo Rotta, Universidade Federal do Rio Grande do Sul, Departamento de Solos, Avenida Bento Gonçalves, no 7712, CEP 91540-000 Porto Alegre, RS.

lattes.cnpq.br/5564976355277573

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Published

2016-10-17

How to Cite

Souza, E. D., Carneiro, M. A. C., Paulino, H. barbosa, Ribeiro, D. O., Bayer, C., & Rotta, L. R. (2016). Organic matter and soil aggregation after the conversion of “murundu fields” into a no-tillage system. Pesquisa Agropecuaria Brasileira, 51(9), 1194–1202. https://doi.org/10.1590/S1678-3921.pab2016.v51.22502

Issue

v.51, n.9, set. 2016: Número Temático O solo como fator de integração entre os componentes ambientais e a produção agropecuária

Section

SOLO E AMBIENTE (TEMÁTICO)